... steel, induction hardened. The roll is polished with heat treatment. Coated with chrome, the hardness of its ... paper-breaking protection. When paper is broken, the press roll and the glue trough will withdraw.8. ... doctor roller, by electyomotion or Automatic.A.Electromotion: Press the button that controls motor to adjust the clearance ... 1800mm,2000mm,2200mm,2500mm,2800mm.3. Flute Type: A, B, C, E, F, BC.